20126256105516 has 48 divisors (see below), whose sum is σ = 51237969890688. Its totient is φ = 6097972652800.

The previous prime is 20126256105511. The next prime is 20126256105589. The reversal of 20126256105516 is 61550165262102.

It is not an unprimeable number, because it can be changed into a prime (20126256105511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10255050 + ... + 12058961.

It is an arithmetic number, because the mean of its divisors is an integer number (1067457706056).

Almost surely, 2^{20126256105516} is an apocalyptic number.

It is an amenable number.

20126256105516 is an abundant number, since it is smaller than the sum of its proper divisors (31111713785172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20126256105516 is a wasteful number, since it uses less digits than its factorization.

20126256105516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22320862 (or 22320860 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 20126256105516 in words is "twenty trillion, one hundred twenty-six billion, two hundred fifty-six million, one hundred five thousand, five hundred sixteen".